I am planning to install Windows 7, 64 bit on a 1TB HDD in one of two partitions. I have read space allowance recommendations for from 20 GB to 50 GBs. I understand that along with the OS, there are several additional files that have to be installed in that same partition, ie. Program Files, Program Files (x86), Users and Perflogs. If this is correct, wouldn't it be prudent to allow more space than that? If that is not correct, how do I force these files to go to the other partition during installation.